California earthquakes

M2.2 earthquake 9 km SSW of Ridgemark, California

A magnitude 2.2 earthquake struck 9 km SSW of Ridgemark, California on Wed, Feb 7, 1990, 8:42 AM PST (16:42 UTC), 7 km (4 mi) below the surface.

A larger quake followed: M4.0 1 km NNE of Aromas, California. This one was a foreshock.

Ridgemark forecastMore in California

Map

Where this earthquake was located, with the others nearby. Select one for its page.

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The earthquake

Magnitude
2.2 (Md, duration), micro
Magnitude from
Northern California Seismic System
Local time
UTC
1990-02-07 16:42:23 UTC
Depth
6.8 km (4.3 mi), shallow
Epicenter
36.742° N, 121.416° W
Tsunami flag
No
Status
Reviewed by a seismologist

Did you feel it?

No one has reported feeling this quake to the USGS.

How well it is located

Reviewed by a seismologist.

Location uncertainty
About 0.1 km horizontally, 0.3 km in depth
Magnitude uncertainty
±0.16
Depth from
From location
Station coverage gap
53°
Stations used
48

Nearest places

Distance and direction from each place to the epicenter, with its forecast.

Nearby

Within 100 km, magnitude 1.5 and up: 175 in the 60 days after this one and 190 in the 30 days before it.

After

  1. 1.68 km SE of Lexington Hills, California · 13388 days ago · 4 km deep · 60 km away
  2. 1.94 km E of Interlaken, California · 13387 days ago · 6 km deep · 33 km away
  3. 1.55 km NW of Day Valley, California · 13387 days ago · 14 km deep · 56 km away
  4. 3.310 km S of Tres Pinos, California · 13387 days ago · 4 km deep · 10 km away
  5. 1.811 km S of Tres Pinos, California · 13387 days ago · 4 km deep · 11 km away
  6. 2.617 km SSE of Tres Pinos, California · 13387 days ago · 4 km deep · 18 km away
  7. 1.84 km W of Lexington Hills, California · 13387 days ago · 12 km deep · 71 km away
  8. 1.83 km NNE of Lexington Hills, California · 13386 days ago · 5 km deep · 69 km away
  9. 1.636 km WSW of Three Rocks, California · 13385 days ago · 12 km deep · 67 km away
  10. 2.20 km WSW of Campbell, California · 13385 days ago · 4 km deep · 77 km away
  11. 1.70 km SW of Campbell, California · 13385 days ago · 3 km deep · 77 km away
  12. 1.52 km SW of Carmel Valley Village, California · 13385 days ago · 16 km deep · 43 km away
  13. 1.66 km ENE of Aromas, California · 13385 days ago · 6 km deep · 23 km away
  14. 1.64 km SSE of San Juan Bautista, California · 13385 days ago · 5 km deep · 12 km away
  15. 1.72 km ESE of Tres Pinos, California · 13385 days ago · 9 km deep · 11 km away
  16. 1.54 km E of Interlaken, California · 13384 days ago · 9 km deep · 33 km away
  17. 2.01 km NE of Interlaken, California · 13384 days ago · 13 km deep · 37 km away
  18. 1.95 km SSE of San Juan Bautista, California · 13384 days ago · 5 km deep · 11 km away
  19. 2.026 km NE of Soledad, California · 13384 days ago · 9 km deep · 36 km away
  20. 1.526 km NE of Soledad, California · 13384 days ago · 9 km deep · 36 km away
  21. 1.912 km WSW of King City, California · 13384 days ago · 4 km deep · 65 km away
  22. 2.6Near the coast of Central California · 13384 days ago · 6 km deep · 68 km away
  23. 1.821 km S of Davenport, California · 13384 days ago · 0 km deep · 68 km away
  24. 1.615 km S of Davenport, California · 13384 days ago · 5 km deep · 68 km away
  25. 1.615 km S of Davenport, California · 13383 days ago · 5 km deep · 68 km away
  26. 1.82 km NE of Saratoga, California · 13383 days ago · 5 km deep · 79 km away
  27. 1.614 km SW of Santa Cruz, California · 13383 days ago · 5 km deep · 67 km away
  28. 3.84 km ESE of Aromas, California · 13383 days ago · 7 km deep · 21 km away
  29. 1.94 km ESE of Aromas, California · 13383 days ago · 6 km deep · 22 km away
  30. 2.84 km ESE of Aromas, California · 13383 days ago · 7 km deep · 22 km away
  31. 2.213 km S of Tres Pinos, California · 13383 days ago · 5 km deep · 14 km away
  32. 1.915 km S of Davenport, California · 13383 days ago · 5 km deep · 68 km away
  33. 1.913 km SSE of Tres Pinos, California · 13383 days ago · 5 km deep · 15 km away
  34. 2.64 km NNW of Day Valley, California · 13383 days ago · 12 km deep · 55 km away
  35. 1.911 km S of Tres Pinos, California · 13382 days ago · 4 km deep · 11 km away
  36. 1.84 km E of San Juan Bautista, California · 13382 days ago · 9 km deep · 13 km away
  37. 1.721 km E of Tres Pinos, California · 13382 days ago · 0 km deep · 29 km away
  38. 2.44 km NNW of Day Valley, California · 13382 days ago · 13 km deep · 55 km away
  39. 1.63 km ESE of Aromas, California · 13382 days ago · 5 km deep · 22 km away
  40. 1.712 km ESE of East Foothills, California · 13381 days ago · 5 km deep · 69 km away
  41. 2.52 km ESE of Aromas, California · 13381 days ago · 7 km deep · 24 km away
  42. 2.72 km ESE of Aromas, California · 13381 days ago · 7 km deep · 23 km away
  43. 2.02 km ESE of Aromas, California · 13381 days ago · 7 km deep · 23 km away
  44. 2.84 km ENE of Interlaken, California · 13381 days ago · 6 km deep · 34 km away
  45. 2.0Northern California · 13381 days ago · 10 km deep · 42 km away
  46. 1.75 km SSW of Ridgemark, California · 13380 days ago · 10 km deep · 4 km away
  47. 2.72 km ESE of Aromas, California · 13380 days ago · 7 km deep · 24 km away
  48. 1.59 km NNE of Morgan Hill, California · 13380 days ago · 3 km deep · 54 km away
  49. 1.94 km NE of Amesti, California · 13380 days ago · 12 km deep · 41 km away
  50. 1.722 km SE of Tres Pinos, California · 13380 days ago · 6 km deep · 26 km away
  51. 1.524 km NE of Greenfield, California · 13379 days ago · 5 km deep · 46 km away
  52. 1.72 km SW of Saratoga, California · 13379 days ago · 10 km deep · 79 km away
  53. 1.58 km ENE of Morgan Hill, California · 13379 days ago · 3 km deep · 50 km away
  54. 1.95 km NNW of Aromas, California · 13379 days ago · 10 km deep · 31 km away
  55. 2.51 km SSW of Monte Sereno, California · 13379 days ago · 3 km deep · 75 km away
  56. 3.32 km ESE of Aromas, California · 13379 days ago · 8 km deep · 24 km away
  57. 1.88 km N of Day Valley, California · 13379 days ago · 3 km deep · 58 km away
  58. 2.83 km NNW of Interlaken, California · 13378 days ago · 14 km deep · 39 km away
  59. 2.54 km N of Day Valley, California · 13378 days ago · 16 km deep · 55 km away
  60. 2.324 km NE of Greenfield, California · 13378 days ago · 6 km deep · 44 km away

The first 60 of 175.

Before

  1. 4.14 km E of Interlaken, California · 13388 days ago · 7 km deep · 34 km away
  2. 3.13 km ESE of Aromas, California · 13388 days ago · 7 km deep · 23 km away
  3. 1.617 km WNW of Davenport, California · 13389 days ago · 12 km deep · 92 km away
  4. 1.88 km SW of Tres Pinos, California · 13389 days ago · 3 km deep · 4 km away
  5. 1.97 km S of Tres Pinos, California · 13389 days ago · 9 km deep · 9 km away
  6. 2.73 km ESE of Aromas, California · 13389 days ago · 7 km deep · 23 km away
  7. 1.74 km ESE of Interlaken, California · 13389 days ago · 12 km deep · 32 km away
  8. 2.42 km S of Lexington Hills, California · 13389 days ago · 13 km deep · 67 km away
  9. 1.611 km WSW of Volta, California · 13390 days ago · 6 km deep · 49 km away
  10. 1.54 km NW of Day Valley, California · 13390 days ago · 16 km deep · 56 km away
  11. 1.53 km NNE of Interlaken, California · 13390 days ago · 12 km deep · 38 km away
  12. 2.18 km ESE of East Foothills, California · 13390 days ago · 8 km deep · 74 km away
  13. 2.121 km NE of Soledad, California · 13390 days ago · 2 km deep · 30 km away
  14. 2.014 km N of Morgan Hill, California · 13391 days ago · 6 km deep · 61 km away
  15. 2.521 km NE of Soledad, California · 13391 days ago · 3 km deep · 31 km away
  16. 2.117 km SSE of Tres Pinos, California · 13391 days ago · 4 km deep · 18 km away
  17. 1.917 km SSE of Tres Pinos, California · 13391 days ago · 4 km deep · 18 km away
  18. 3.03 km ESE of Aromas, California · 13391 days ago · 7 km deep · 22 km away
  19. 2.13 km ESE of Aromas, California · 13391 days ago · 6 km deep · 23 km away
  20. 1.98 km SE of San Juan Bautista, California · 13391 days ago · 2 km deep · 7 km away

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Sources

From the USGS Earthquake Hazards Program and its partner networks, event nc152025. Read Sun, Oct 4, 2026, 9:30 AM UTC.